import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 10000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['Authorization'] = 'Bearer ' + getToken()
    }
    let url = config.url
    // post参数编码
    if (config.method === 'post' && config.params) {
      url += '?'
      let keys = Object.keys(config.params)
      for (let key of keys) {
        url += `${key}=${encodeURIComponent(config.params[key])}&`
      }
      url = url.substring(0, url.length - 1)
      config.params = {}
    }
    config.url = url
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response

    // if the custom code is not 20000, it is judged as an error.
    if (res.status != 200 ) {
      Message({
        message: res.message || 'Error',
        type: 'error',
        duration: 5 * 1000
      })

      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.status === 201 || res.status === 401) {
        // to re-login
        Message({
          type: 'error',
          message: res.message,
          onClose: function () {
            store.dispatch('user/resetToken').then(() => {
            })
            store.dispatch('LogOut').then(() => {
              location.reload()
            })

          }
        })
        /*MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
          confirmButtonText: 'Re-Login',
          cancelButtonText: 'Cancel',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })*/
      }
      if (res.status === 408) {
        debugger
        Message({
          type: 'error',
          message: res.message,
          onClose: function() {
            store.dispatch('user/LogOut').then(() => {
              location.reload()
            })
          }
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return response.data
    }
  },
  error => {
    if (error.response.status === 408) {
      Message({
        type: 'error',
        message: 'token值过期，请重新登录',
        onClose: function() {
          store.dispatch('user/logout').then(() => {
            location.reload()
          })
        }
      })
    }
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
